Can closing machine



Oct. 3, 1933 TROYER ET AL CAN CLOSING MACHINE 14 Sheets-Shed 1 Filed March 26 1930 Q O Q g 43 Q N o n D \5 Q Rm R .R 4 Q/ 8% w R Q .wmw m\\ Q wk NELSON Teams-,2

PAUL 1 Paneqarv INVENTOR5 ATTORNEYS 3,'1933- N. TROYER El AL CAN CLOSING mcmns Filed March 26, 1930 1 4 Sheets Sheet 2 hm u Mm.

N. TROYER ET AL 'CAN CLOSING MACHINE Filed March 26 1930 14 Sheets-Sneet 3;

NM MEW ma a/251mm N. TROQYER ET AL 01m CLOSING mounds Filed March 26, 1930 14 Sheets-Shat 4 6' ATTORNEYS N. TRO'YER ET AL cm CLOSING means File d llarch 26, 1930 14 Shuts-Sheet 5 son TROYEJE BY P401. big-42:0 /Q wfmam' 1' v ATTORNEYS INVENTORS N54.

Oct. 3, 1933. N. TROYER ET AL.

CAN CLOSING MACHINE Filed March 26 1930 I 14 Sheets-Sheet 6 m 0 8mm Q *3) Q Rm Q m 7 MN m 4 6w QM, Q ma. Q Q kw U Q 5 INVENTORS NELSON TRoYEe PHI/L E. PEmeso/v BY V- )Qn'wm ATTORNEYS Och 3, 1933. N. TRO YER ET AL 1,929,339

01m CLOSING MACHINE Filed March 26. 1930 14 sheets-sheet 7 NELSON. RQYEB 3504 E. Rsou INVENTORS Z F q l A mzvs Oct. 3. 1933. N. TROYER El AL CAN CLOSING MACHINE Filed March 26 1930 14 spouts-sheet 9 Oct. 3, 1933.

N. TROYER ET AL CAN CLOSING MACHINE Filed March 25, 1930 14 Sheets-Sheet 1O ATTORNEYS was.- I N. TROYER Em mzasss cm! CLOSING momma I Filed March 26, 1930 l4 Sheets-Sheet 11 BY If 7 W nhvs 1933- N. TROY ER ET AL, 1,929,339-

QAN CLOSING MACHINE Filed March 26, 1930 14 Sheets-Sheet 13 Oct. 3, 1933. N. TROYER ET AL cm CLOSING MACHINE Filed March 26. 1930 14 Sheets-Sheet. 14

S R O T N E V m PAW/L E'. PEWRS 6N ATTES Patented Oct. 3, 1933 CAN CLO-SING MACHINE Nelson Troyer and Paul E. Pearson, Seattle, Wash., assignors to Continental Can Company, Inc., a corporation of New York Application March 26, 1930. Serial No. 439,137

36 Claims.

high filled cans, and which will time the filled cans for delivery into the machine, apply the ends thereto, clinch the ends on the bodies and then double seam them; this being'accomplished in a manner that avoids spilling of contents 'from the cans.

More specifically stated, the objects of the invention reside in the provision of a can closing and seaming machine of the above stated character comprising in combination, means designed for taking up the filled cans supplied thereto in a promiscuous, untimed order and for feeding them in a properly timed order into the machine; means synchronized with the timing mechanism whereby the ends are applied to the cans in a relatively slow and easy manner which pushes the contents down into the cans without spilling; a clincher which secures the ends to the body flanges; and a double seamer which receives the cans from the seamer and hermetically seals them; the machine embodying mechanism whereby the filled cans, after being initially received, are moved at a gradually accelerated speed up to the relatively high speed of the clincher mechanism withoutany irregularity or unevenness of movement that would causespilling of their contents before application and clinching of the can ends thereonto.

Another object of the invention is to provide a multiple spindle seamer mechanism 01' novel construction in which each spindle accomplishes what heretofore generally was required to be done by two separate spindles; that is, a multiple spindle machine in which each spindle embodied both the first and second operation seaming rolls.

Still another objectof the invention resides in the means provided for accelerating the movement of the cans as they pass from the receiving point to the-seamen other objects of the invention reside in the details of construction of the various devices, in their combination and in their mode of operation as will hereinafter be described.

In accomplishing the objects of the invention, we have provided the improved details of construction, the preferred forms of which are 11- lustrated in the accompanying drawings, wherein I l Figure 1 is a perspective view of a can closing and seaming machine embodied by the present invention.

Figure 2 is a top, or plan view of the same.

Figure 3 is a side elevation, opposite that shown in Figure 1.

Figure 4 is ahorizontal section particularly showing the path of the cans as advanced through. the machine.

Figure 5 is a plan view of the gear train whereby the various operating mechanisms are driven and synchronized.

Figure 6 is a vertical cross section on line 66 in Figure 5.

Figure 6a is a detail of parts associated with the control lever and automatic stop mechanism.

Figure 6b is a sectional detail of the same.

Figure 7 isa vertical 'cross section taken on lines '7'! in Figures 4 and 5.

, Figure 7a is a horizontal section on line la-- la in Figure '7.

Figure 8 is a vertical cross section on line 8-8 in Figures 2, '4 and 5.

Figure 8a is a front view 01' the marking dies.

Figure 8b is a section on line 8b8b in Fig. 8a,.

Figure 9 is a central, vertical section lengthwise of the machine substantially on line 9-9 in. Figure 2.

Figure 10 is an enlarged detail of the can feed turret and timing mechanism; parts being broken away for better illustration.

Figure 11 is a section taken on line 11--11-in Figure 10.

Figure 12 is a sectional detail on line 12-12 in Figure 10.

Figure 13 is an enlarged, sectional view of the clincher mechanism. Figure 13a is a sectional detail of a clincher chuck and the clincher ring.

Figure 14 is an enlarged, sectional detail of the seamer mechanism.

Figure 15 is a sectional view of a seamer head.

Figure 16 is a horizontal section taken substantially on the line 16-16 in Figure 15.

Figure 17 is a plan view showing the arrangement of the scanner roll mounting slides in the seamer head.

Figure 18 is an under head.

Figure 19 is a plan diagrammatically showing the automatic mechanism for stopping the ma side view of a seamer a shaft 37 which, at its upper end, mounts a half mold, or can shaping turret 38. This has pockets 38a designed to be brought into complemental registration with the pockets 6a of the clincher turret 6 to embrace and round up the can bodies preparatory to application of the covers or ends. Gear 36 is keyed to a vertical shaft 40 which, at its upper end mounts the feed turret 5. A gear wheel 41 is also keyed to shaft 40 and this meshes with and drives a gear 42 fixed on the lower end of a vertical shaft 43 which mounts and rotates thefeed disk 3.

Manual control of the machine, in so far as its starting and stopping operation is concerned, is provided for by an upright hand lever 44 fixed to and supported by a shaft 45 revolubly contained in a supporting bracket 46 fixed to the base housing of the machine, as shown in Figure 3. This control lever haspin and slot connection 441; with a collar 47 fixed on one end of 'a shaft 48 that is extended coaxially through the tubular shaft 15 and at its end opposite the lever is operatively connected with a clutch mechanism 49 associated with the pulley wheel 16, Inward movement of the lever 44 is designed to release the clutch to stop driving of the machine and its outward movement is designed to set the clutch to effect a driving connection between the belt wheel 16 and the shaft 15. A brake disk or cone, as at 50, is fixed to the collar 4'7 adjacent the control lever, and this is actuated from and into frictional contact with a brake drum 50' fixed to the frame, in accordance with movement of the lever for starting and stopping the machine.

The various mechanisms embodied in the present machine are mounted upon a base casting 55. On this, at one end, is secured a housing 56 provided with an extension 56a overlying the other end portion of the base. The'housing 56, and the extension thereof, encloses the various driving gears and connections as disclosed in Figure 5, and serves generally for the support of the seamerfclincher, marker and feeding devices, as well as providing the necessary bearings for the various shafts, as will be apparent by reference to Figures 6 to 9. At one end of the exten-- sion 56a is secured a housing 57 formed with suitable bearings, 57a for the vertical shaft 43 and serving as a support for the feed disk and timing spiral. The feed disk 3 and the housings 56 and 56a have top surfaces in the same horizontal plane so that the cans delivered through the machine may be slid thereon by the various turrets, in their travel from the feed disk to the clincher and finally to the seamer.

A detailed description of the construction and operation of parts in their order from the feed disk to the seamer is as follows: The feed disk 3 is circular and is fixed to the upper end portion of the revolubly driven, vertical shaft 43, which, as shown in Figure 9, is revolubly contained in the vertical bearing 57a formed integral with the casting 5'7. The upper end of this shaft extends slightly above the top of the disk' and mounts a cam plate 61 of circular form but of lesser diameter than the disk and which is fixed against rotation as shown in Figures 4 and 10, by its attachment, through the medium of a bolt 62, to a can guide 63; the latter being rigidly supported by an end portion thereof that overlies and which is fastened to the top of the housing 56a by bolts 64. The filled cans 1, delivered to the machine on the belt 2 generally has onto the feed disk 3 in an irregular, untimed order and against a guide flange 65 at the receiving side of the disk along which they are carried into contact with the timing spiral 4. This spiral is' revolubly supported at its opposite ends in beargear 76 is fixed to shaft '75 in mesh with the driven gear 42 on shaft 43. The lower end of shaft 71, and also shaft 75, are revolubly mounted in suitable bearings provided in a lateral extension 57" integral with the casting 57, .as shown in Figure l.

The cans 1 by engaging the thread of the spiral 4, are properly spaced for delivery into the machine and on being released by the spiral, are carried into a can guideway that is formed by the guide flange 63 and a parallel flange '78 that is fixed to the top of the casting 56a. The advancing means consists of feed fingers 80 carried by the disk 3 and which operate to move the cans at an accelerated speed into the successive pockets 5a of the feed turret 5.

In order that the cans on entering the machine may be held yieldingly against the timing spiral 4, but will not be dented thereby in the event that one becomes centered on a thread of the spiral, we have provided a presser shoe 81 that lies substantially parallel with the spiral and which is pivotally mounted by a stud 82 fixed in the top of the cam plate 61. The free end of the shoe is curved to permit cans on entering to pass between it and the spiral. Inward travel, of the shoe is limited by reason of one end engaging with a set screw 83 mounted in a boss 84 on the cam plate, and it is retained yieldably against outward movement by reason of the pressing thereagainst of a counter weight lever 85, as in Figure 12. This lever is pivotally mounted on a bolt 86 fixed in a boss 86 on the cam plate with a weight 86a adjustable along the lever to vary the retaining pressure against the shoe. With this arrangement, .the cans 1 pass to the timing spiral between the swinging end 'of the shoe 81 and the guide fiange 65. Should a can become centered on a thread of the spiral, the shoe will yield outwardly to prevent any damage being done to the can body but will urgethe can against the spiral so that it will be taken up and advanced by the next thread of the spiral.

Referring-to Figures 10 and 11, it is to be seen that the feed disk 3 has a lowered central portion provided with bosses 87 at regularly spaced interva s circularly about. the axis of the disk, in which studs 90 are mounted. On each stud is pivotally mounted afinger 80 provided atv one side with an inward extension 800. mounting a roller 91. These rollers are adapted to follow within a cam groove 92 formed in the under side of the cam plae 61 in such manner that, as the feed disk 3 rotates, the rollers 91 following along the groove will cause the fingers to swing outwardly to engage the cans after they are spaced apart by ihe timing spiral, and to push themalong into the pockets, of the accelerating turret 5 after which the fingers are then moved inwardly by the cam so as not to inierfere with the passage of oncoming cans to the timing spiral 4. The outer ends of the fingers 80 are properly curved to conform to the curvature of the cans.

On being picked up by the feed turret 5, the cans are moved with an accelerated speed to the and 78 gradually increases in radial distance from the center about which the feed fingers and disk 3 revolves, and this increase causes an acceloration in the speed on the cans as they are advanced along the guideway by the feed fingers 80. The timing of the parts is such that the cans are delivered into the pockets of the turret 5 at the same angular speed oi the turret.

The clincher mechanism, as best disclosed in Figures 2, 9 and 13, is a six spindle arrangement revolubie about a tubular supporting standard 186 fixed vertically upon the housing 56s. A table 161 is revolubly mounted about the base portion of the standard and it is rotated by the ring gear 33 that is fixed coaxially thereio. Carried by the table. at regularly spaced intervals circularly about the standard, are the can pads 18?; in exact registration below the pockets to of the turret 5, and onto which the cans are delivered by the turret 5. Each pad is supported revolu'oly, the niediacy of anti-friction bearings l 3, about a bearing 1G4 that is fixed to the table by a bolt 105. The pad is permitted a slight vertical travel on its spindle and is urged upwardly and is yieldably held against a peripheral end flange 196 of the hearing by coiled springs 19? which are contained in sockets ms in the table in press upwardly against a disk 109 on which the bearings rest. Downward movement of the pads when under pressure, is limited by the disk being brought against the table.

Supported revolubly about the upper end of the s'andard c and revolubly driven from the table 101 through the inediacy of the turret 6, is ahead no in which spindles 112 are revolubly mounted; these spind es being coaxially alined with the pads 102. Each spindle is revolubly mounted within a supporting slide or guide sleeve 113 and the sleeves all are vertically slidably in the head and are adapied to be actuated upwardly and downwardly as the head revolves about the standard by a earn 114.

The cam 114, as shown in Fig. 13, is held against rotation on the standard. 18% by a sliding keyed connection as designated at 1114b, and has supporting connection with a gear 116 mounted on the standard directly above it. has an elongated hub portion 11? slidably keyed to the standard and the gear in turn is supported by a connection with a nut 118 threaded onto the upper end of the standard; this connection consisting of arcuate keys 118a that are seated within an annular groove 113?; in the upper end of the gear hub and w" are clamped against the upper face of ihe groove by a plurality of bolts 1180 which are extended through the nut and are threaded into the keys.

. The connection between the gear 116 and cam 114 provides for vertical adjustment of the latter on the standard and the connection consists of a bolt'115 rotatably mounted in a sleeve 115a threaded through the gear. The bols are threaded into the upper end flange 1140. of the 0am to support it and the sleeves 115s are headed and may be rotated to effect the vertical adjustment.

The earn 114 has an encircling cam groove 120 within which rollers 121, carried by studs 122 fixed in the sleeves 113, are adapted to follow to raise and lower the spindles as the head revolves.

As was previously stated, the can ends 7 are delivered to the clincher by a feed mechanism,

The gear 116 mousse presently describedin detail, including the turret 8, and as they are delivered, they are picked up by chucks 124 that are mounted at the lower ends of the spindles 112. After being picked up by the chucks, the ends are pressed thereby onto the cans as the later are delivered to the clincher turret by the turret 5. The cam groove 120 is so formed that each spindle and its chuck will be in an elevated position at the time a can enters the turret beneath it but will immediately thereafter be lowered to press the cover or end onto the can and hold it during the following clinching operation which curls the flange of the end downwardly beneath the peripheral flange of the can body suiilciently to hold the end in place, as is shown in Fig. 13a. A. feature of this construction resides in the formation of the cam groove 120 which causes the can ends to be moved down easily and slowly against the can end and seated therein so that the heaped up contents in high filled cars will be pressed down into the cans without any resultant squashing out or spilling.

The can end feed mechanism operates to deliver the can ends 7 to the chucks as the clincher head revolves and the chucks then operate to place the ends on the cans and hold them there for the clinching operation. The feed mechanism is best shown in Figures 2, 3, 7 and 8, and is supported by a bracket 125 that is fixed to one side of the housing 56a by a plurality of bolts 126 in such manner as to permit of vertical adjustment. This bracket has a fiat top surface 125a on which a hopper or guide 12? is mounted. The can ends "I are stacked in this hopper and are fed from its lower end, one at a time, into the" pockets 8a of the intermittently revolving turret 8 by the reciprocal action of a feed slide 128 that operates in a guide provided therefor in the bracket top. The reciprocal action of the feed slide is produced through its connectionby a link 129 with one end of an arm 130 fixed to a vertically mount- .ed shaft 131; the shaft being mounted at its upper end in a bearing 13?? fixed to the bracket 125 and, at its lower end, in a bearing 13S extended from a gear casing 134 fixed to the housing 56, and it is oscillated through'the medium of a connecting link 135, which is pivotally attached at one end to an arm 136 mounted on the shaft in a manner later described, and at its other end is connected with a crank 138 fixed on a short, vertical shaft 139 mounted revolubly in a bearing 140 at one side of housing 56 and driven by a gear 141 keyed thereon in mesh with the driven gear 24, as shown in Figure 5 and in Figure 8.

The reciprocal action of the slide delivers the y the chucks and are held centered thereagainst,

ready for application to the cans, by an application of vacuum to the'undersides of the chucks.

The intermittent movement of the feed turret 8 is produced as follows: The turret is mounted on the upper end of a vertical shaft 142 mounted in bearings 143143', as shown in Figure 7. At its lower end is a driving gear 144 which has connection with an intermittent gear1'45 fixed to the lower end of a vertical shaft 146 mounted in bearings 147-147. A small driving gear 148 is keyed to shaft 1 6 and this meshes with the gear wheel 36. Through this connection the can end feed turret 8 is intermittently moved so that its pockets-successively receive the ends advanced by the feed slide, then carry them into position for marking, then to the clincher which picks them up during an advance movement of the turret.

It will here be stated, that the intermittent gear mechanism which advances the turret 8 is such that the turret carries the can ends at the same rate that the spindles of the clincher are rotating so that they may be picked up by the clincher chucks without interference when vacuum is applied to the latter.

Vacuum is aplied to the chucks as follows: Eachspindle, as shown in Figure 13, has an axial channel 150 communicating at its lower end with the under face of the chuck, and has a sliding connection at its upper end with a tube 151 projected into the channel and connected with a header 152 that is revoluble with the head 110 about the gear 116 that is fixed adjustably to the standard 100. A valve collar 153 encircles the gear hub and is fixed against rotation and has an airtight fit with the header. A pipe 154 leading from a source of vacuum connects with an annular channel 155 in the valve collar and this communicates through outlets 156 with channels 157 in the header leading to the various tubes 151. The outlets 156 are so located and so designed that the valve operates to apply the vacuum while the spindles are traveling through that certain are where it is required that the ends be picked up and carried to the cans.

Application of vacuum to the chucks causes the ends to be picked up and held tightly against the chucks as the latter moves into registration with the filled cans delivered by the turret 5. The cam 114 then causes the spindles to move downwardly to press the ends 7 tightly within the can body flanges.

After the ends are thus applied to the cans, the clinching operation starts. This is effected by advancing the flanged peripheral edges of the ends in rolling contact with a clincher ring segment 159 that is supported. as shown in-Figures i, substantially concentrically of the clincher head and standard 100. This clincher ring segment is supported within a seat 160 formed along the top edge of an arcuately curved support. 161 that is rigidly mounted by a pair of supporting posts 162 and 163. The ring segment 159 has a curling groove 159a along its inner edge for receiving the periphery of the can end in rolling contact therewith to turn the flange inwardly beneath the can body and flange, as shown in Figure 130:. The segment is adjustably mounted, and is held on its support 161 by overlying clamps 165 fixed by bolts 166 to the support and it may lee-adjusted inwardly or outwardly to curl the flange to the desired extent.

To insure the desired clinching operation, it is required that the cans be revolved while moving along the clincher ring segment and not allowed to merely slide along it, since this would not eiiect the desired curling of the flange. To cause the cans to revolve, the chucks and their spindles are revolubly driven and since the chucks are pressed tightly against the cans, this causes them to revolve. The means provided for revolving the chucks, as shown in Figures 2 and 13 wherein 167 designates gears fixed to the upper ends of the spindles and meshing with idle gears 168 mounted on the head 110 and in mesh with the gear 116. The gears 168 are carried by spindles 169 and are relatively long. so as to permit of the up and down movement of the spindles without disconnection.

ment, the cans, with ends attached thereto, are picked 'up by the radial arms or me turret 9 and are advanced along a guide flange 170 to the seamer mechanism; the guide 170 being eccentric or the turret so that the cans will be advanced at an accelerated speed and delivered exactly into registration with the spindles of me seamer.

The seamer mechanism, as shown best in Figures 1, 9 and 14 is afour spindle mechanism wherein each spindle performs a complete seam- On leaving the end of the clincher ring seging operation; that is, it embodies both the first and second operation seaming rolls, usually carried by two separate spindles. The mechanism, as shown in detail in Figures 9 and lei, comprises the can pad table 175 fixed to a central tubular supporting post 176 revolubly mounted in a ver-- tical position within bearing members l77-i78 within the housing 56; there being anti-friction bearings 179 revolubly mounting the post. The table is revolubly driven through the mediacy of the gear 26 which is keyed to the lower end or? the post and which in turn is driven through the gearing previously described, and shown in Figure 5. Mounted by the table at equally spaced intervals about its axis, are the pads 182 onto which the cans are delivered by the turret 9 upon leaving the clincher mechanism. Each pad is mounted by a shank 183 extended downwardly therefrom onto a slide 184 mounted within a guide bushing 185 fitted within a bearing 186 formed as apart of the table 175. The shank has a cross key 187 fixed on its lower end and this is slidable at its ends in a slot 188 in the slide to permit of a slight raising and lowering of the pad while held against rotation. The slide in turn is held against rotation by a key 189 fixed to itslower end and slidable in a key slot 1890s in a flange 175a depending from the table. (See Figure 14.)

Threaded onto the upper end of the shank is a nut '190 having a sleeve portion 190a slidable in the upper end of the slide 184 and a coiled spring 191 bears against the lower endof the nut sleeve and against a shoulder 192 in the slide, to

yieldably hold the pad in a raised position. Upward and downward adjustment of the nut varies the tension of the spring and the nut is adapted to be locked where adjusted by a yieldable latch 193, carried by a flange 194 fixed to the under side of the pad, and engageable with grooves 194' in the periphery of the nut.

At its lower end the slide carries a roller 198 I and a cam segment 203 is flxed to the housing 56 to engage therewith to pull the slides downward to withdraw the cans from the seaming spindles.

The four seaming devices are revolubly mounted in a seamer head 210 fixed to the upper end of a supporting and driving sleeve 211 which has its lower end portion slidably keyed, as at 212, within the upper end portion of the tubular post 1'16. Each seaming device comprises a spindle 215 coaxially alined with one of the can mounting pads, and revolubly supported through the me= raceways of the upper sets of bearings by nuts 223 threaded ontothe upper ends of the spindles.

The several spindles are revolubly driven through their gears 222 which mesh with a central gear 225 that is keyed to the driven shaft which extends centrally through the post 1'76 and sleeve 211 and which is revolubly driven, as previously described, by the gear 29 fixed to its. ,lower end. This shaft 30 is revolubly mounted at its lower end by bearings 226 fltted within the lower end of post 1'75, and at its upper end by bearings 22? carried in the upper end of a sleeve 228; this latter sleeve being fitted about the shaft and fixed at its upper end to an am 230 which,

as shown in Figure 9, is mounted on the upper end of the standard 100 about which the clincher head revolves. This arm serves not onbr as a brace' for the seamer but also prevents rotation of the sleeve 228 and certain parts associated therewith.

Directly after the cans are delivered onto theseamer table pads 182 from the clincher mechanism, the pads are actuated upwardly to press the top ends of the cans against the seamer chucks 235 which are carried at the lower ends of shafts 236 extended coaxially through the seamer spindles and locked at their upper ends by nuts 237 in a head 236 that is revoluble with the seamer head; this head 238 having a hub portion 238' whereby it is revolubly mounted about the upper end portion of a earn 240 that is mounted about the lower end of the sleeve 228 above the gear 225, but which is held against rotation by a keyed connection as at 241 with the sleeve.

- After a can has been lifted by the pad on which it rests, against the chuck 235 of the seaming mechanism, the seaming operation takes place. For this operation each spindle is provided with an enlarged head portion 215a at its lower end in which is mounted a pair of slide bars 250-256, horizontally slidable in parallel relation at opposite sides of the shaft 236, as shown best in Figures 14 and 17. r w

The bar etc is provided, at, one end, on its upper side with paired lugs 251, and the slide bar 255 is likewise provided at the opposite end, with lugs25i'. The slides are actuated by toggle links 252--252' oi an e-shaped formation to permit of a certainarnount of yielding when the seeming rollers pass over the can side seam, and which have their outer ends pivotally attached, as at 253 between the lugs, and have their inner ends pivotally attached by pins 254 to a member 255 that is located within the spindle and which is fixed to the lower end of a sleeve 256 which extends u w-ardly from the seamer head. At the upper ends the sleeves 256 of the several spindles have cam roliers 25& mounted thereon and these iollow within the groove 240' o! cam 240 so that, as the seamer head revolves, the sleeves and the members 255 are moved upwardly and downwardly within the spindle heads.

hilounted on the under sides oi the-slide bars, and at opposite ends, as shown in Figures 17 and it, are w: w. w-t rolls 265-25's), designated as the messes first operation rolls. Likewise mounted at the opposite ends of the bars, are seaming rolls 261-261, designated as the second operation seaming rolls. Theseare circumferentially grooved in the usual manner for the double seaming operation, and are at the proper level with respect to the chucks 235 to cooperate therewith. J

When a can is lifted against its chuck 235, the member 255 is in neutral position and the seaming rolls are retracted sufliciently from the chuck to permit the engagement oi the can with the chuck; then, as the seamer head revolves, the'cam 2&0, through its connection with the sleeves 256, causes the sleeve to be shifted upwardly. This draws inwardly and upwardly on the toggle links and causes the slide bars to beso moved as to bring the first operation seaming rolls against the can end flange to eiIect the initial seaming operation. Then the sleeves are actuated downwardly so that the toggles'move the slides in the opposite direction and bring the second operation rolls against the can flange to complete the seeming its lower end and a head '267at'its upper end adapted to engage with a earn 268 carried by an arm 269 fixed to the brace bar'230 so as to push the rod downwardly at the proper time. The cans are then taken up by the arms of turret 10 and delivered from the machine.

It is preferred that the seaming rolls be adjustably mounted in their slides so that they may be adjusted to suit difl'erent sizes of cans and for this purpose each roll is mounted, as shown in Figure 15, on acarrie'r 275 that is slidable in a longitudinal groove 276 in the slide bar. An adjusting screw 2'77 is threaded through each block and has a rotatably fixed connection with the bar, as at 2'78, so that by turning the screw, the

carrier 275 will he moved lengthwise oi the bar.

Certain adjustment is also provided for in the seamer for adjusting the head to accommodate cans of different length; As shown in Figure 1%, the sleeve 213 which supports the seamer head above the can pad table 175 has a threaded portion 285 about its lower end portion and a nut 281 is mounted thereon within the upper end of post 1'36 to support it. it worm 252 meshes with the nut and this has an end portion 223 to which a wrench may be applied to rotate the not as a means of raising or lowering the head with re spcct to-the table.

The means employed tor applying identification marks to the can ends is associated with the can end feed mechanism, and is shown best-in Figures 2, 8a and 8?). As shown in Figure 8a. there is a lower die holder 290 or six; races mounted rotatably on a stud 291 fixed in the bracket 125 directly below the path 01' can ends delivered by theturret 8 from the supply stack and also registering directly below one oi the pockets on in the turret when the turret is at rest. idoimmd on a vertical slide bar 292 that is slidebly contained in agroove 293, in a bracket 126a above the turret 8, is an upper die holder 29% rotauahiy the mark. To the noses- 

